A Máquina de Wimshurst é um gerador eletrostático de alta tensão desenvolvida em 1883 by British inventor James Wimshurst. This generator has two counter-rotating discs mounted in a vertical plane, the discs are various metal sectors set whose edges are rounded, two transverse bars with wire brushes, and two metal spheres separated by a distance, para que as faíscas ...

O circuit integrado 741 uses a bipolar transistor technology egg made , tem encapsulamento DIL de 8 pins and their function is to be an operational amplifier. a alimentação é de 3 Volts a 30 Volts with a maximum power audio 500 mW. The 741 It is provided with a single outlet, with two entrances, and an inverting. 741 Pinos 1 and 5 are ...

This is a dBm table, dBu ,Tension and Units-S (S-units) . dBm, dBu voltage and metric units are well known, Units already-S (S-units) It is somewhat unknown to those who do not work in the radio frequency area. S-units meter is a kind of signal strength meter, a widely used gauge in communications receivers , such as amateur radio receivers or ...

ELF é a sigla do inglês de frequência extremamente baixa (Extremely Low Frequency), of electromagnetic radiation band, with frequency 3 a 30 Hz , and the corresponding lengths of a wave 100.000 a 10.000 km. ELF radio waves are generated by lightning or natural disturbances in the Earth's magnetic field. Devido à dificuldade de construção de antenas ...

A DIAC, acronym of the English Diode for Alternating Current, it is a diode that conducts current only when a certain trigger voltage is reached, and driving when the electric current falls below a certain value, this value is called power failure. This occurs in both the current driving directions DIAC, this behavior is bidirectional, ...